Faujasite
Mineral (Na2,Ca,Mg)3.5Al7Si17O48·32H2O
Also called Faujasite-Na, Faujasite-Ca, and Faujasite-Mg
About it
Small glassy octahedra in basalt cavities, the natural model for synthetic zeolite catalysts; its type locality is Sasbach in Germany's Kaiserstuhl.
- Type
- Mineral
- Group
- Silicate (tectosilicate), zeolite group
- Formula
- (Na2,Ca,Mg)3.5Al7Si17O48·32H2O
- Hardness (Mohs)
- 4.5–5
- Specific gravity
- 1.92–1.94
- Streak
- white
- Lustre
- vitreous (glassy)
- Crystal system
- Isometric (cubic)
- Colours
- colourless, white, pale brown
- Transparency
- transparent, translucent
- Cleavage and fracture
- perfect octahedral
Typical values: real specimens vary. For more, see mindat.org.